Product Warranties (Summary Of Activity In Warranty Accrual) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Mar. 31, 2012	Apr. 02, 2011	Mar. 31, 2012	Apr. 02, 2011
Product Warranties [Line Items]
Warranty accrual at beginning of period	$ 18,552	$ 16,305	$ 19,247	$ 14,856
Additions from acquisitions	40	0	40	0
Warranties issued during current period	2,501	3,597	4,261	6,746
Adjustments to pre-existing warranties	(331)	397	(305)	390
Reductions for settling warranties	(3,186)	(2,063)	(5,545)	(3,643)
Foreign currency translation	144	334	22	221
Warranty accrual at end of period	$ 17,720	$ 18,570	$ 17,720	$ 18,570
Minimum [Member]
Product Warranties [Line Items]
Product warranty period, in months			12
Maximum [Member]
Product Warranties [Line Items]
Product warranty period, in months			36